package com.mccree.client;

import com.mccree.handler.NettyClientHandler;
import io.netty.bootstrap.Bootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;

public class NettyClient {

    public static void main(String[] args) throws InterruptedException {
        //客户端需要一个事件循环组

        EventLoopGroup group = new NioEventLoopGroup();

        try {
            Bootstrap bootstrap = new Bootstrap();
            bootstrap.group(group)
                    .channel(NioSocketChannel.class)
                    .handler(new ChannelInitializer<SocketChannel>() {
                        @Override
                        protected void initChannel(SocketChannel ch) throws Exception {
                            ch.pipeline().addLast(new NettyClientHandler());
                        }
                    });
            System.out.println("客户端 ok...");
            //启动客户端去连接服务器
            //关于channelFuture要分析，涉及到netty的异步模型
            ChannelFuture future = bootstrap.connect("127.0.0.1", 6668).sync();
            //给关闭通道进行监听
            future.channel().closeFuture().sync();
        }finally {
            group.shutdownGracefully();
        }
    }
}
